Rohde & Schwarz CMU-K20, Operating Manual

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Common: MODulation:XPERror CMU-K20/21/22/23/24
1115.6088.12 6.78 E-12
CALCulate:MODulation:XPERror[:GMSK]:LIMit:MATChing? Bursts out of Tolerance
Returned values Value range Def. value Def. unit FW vers.
Phase Err. Peak Current,
Phase Err. Peak Average,
Phase Err. Peak MaxMin,
Phase Err. RMS (x3),
Origin Offset (x3),
I/Q Imbalance (x3),
Frequency Error (x3),
AvgBurstPowerCurr
For all measured values:
NMAU | NMAL | INV | OK
INV
INV
INV
INV
INV
INV
INV
INV –
–
–
–
–
–
–
– V2.15
Description of command
This command is always a query. It indicates whether and in which way the error limits for the scalar measured
values (see above command) have been exceeded.
The following messages may be returned for all measured values:
NMAU Underflow of tolerance value
not matching, underflow
NMAL Tolerance value exceeded
not matching, overflow
INV Measurement invalid
invalid
OK all tolerances matched
READ:ARRay:MODulation:XPERror[:GMSK][:CURRent]? Phase Error in Burst
READ:ARRay:MODulation:XPERror[:GMSK]:AVERage?
READ:ARRay:MODulation:XPERror[:GMSK]:MMAXimum?
Start single shot measurement and return results
⇒
RUN
FETCh:ARRay:MODulation:XPERror[:GMSK][:CURRent]?
FETCh:ARRay:MODulation:XPERror[:GMSK]:AVERage?
FETCh:ARRay:MODulation:XPERror[:GMSK]:MMAXimum?
Read measurement results (unsynchronized)
⇒
RUN
SAMPle:ARRay:MODulation:XPERror[:GMSK][:CURRent]?
SAMPle:ARRay:MODulation:XPERror[:GMSK]:AVERage?
SAMPle:ARRay:MODulation:XPERror[:GMSK]:MMAXimum?
Read measurement results (synchronized)
⇒
RUN
Returned values Description of parameters Def. value Def. unit FW vers.
–100.0 deg to+ 100.0 deg,
... ,
–100.0 deg to+ 100.0 deg 1
st
value for phase error
...
xth value for phase error
NAN
...
NAN dB
...
dB V2.15
Description of command
These commands are always queries. They return the phase error of the burst vs. time in a fixed ¼-bit pattern.
The number of measured values is 588, corresponding to a time range of 0 bit to 146 ¾ bit. The calculation of
current, average, and mmax (Min./Max.) results is explained in chapter 3 (cf. display mode ).
深圳德标仪器
135-1095-0799